Results 11 to 20 of about 2,581 (269)
Tooth Contact Analysis of Profile-Shifted Face Gear with Double-Crowned Pinion
Jixie chuandong, 2015 The coordinate systems for the processing and driving of the profile-shifted spur pinion with double-crowned and the profile-shifted face gear are established,the tooth surface equations of the profile-shifted pinion and the profile-shifted face gear are
Li Wei, Wang Dan, Fu Xuezhong
doaj +2 more sources
Double-crowned valved stents for off-pump mitral valve replacement☆ [PDF]
European Journal of Cardio-Thoracic Surgery, 2005 An animal model has been designed to assess the feasibility of off-pump mitral valve replacement using valved stents.Glutaraldehyde-preserved homograft was sutured inside a prosthetic tube (Dacron). Then, two self-expandable nitinol Z-stents were sutured on the external surface of the prosthesis in such a way to create two self-expanding crowns for ...
Ma, Liang +5 more
openaire +4 more sources
Log Taras Walls Construction in the Russian State in the Late 16th –Early 18th Century
Нижневолжский археологический вестникThis article reconstructs the design of crowned taras walls built in the late 16th – early 18th century in the Russian state. Based on an analysis of published written sources, archaeological and pictorial materials, the author establishes the main
Sergey Gorokhov
doaj +2 more sources
Changes in heron and egret populations on the Laurentian Great Lakes and connecting channels, 1977-2009 [PDF]
Avian Conservation and Ecology, 2015 Canadian and U.S. federal wildlife agencies completed four decadal surveys, spanning the years 1977 to 2009, to census colonial waterbirds breeding on the Great Lakes and adjoining bodies of water.
Scott A. Rush +5 more
doaj +2 more sources
, 2021 Double mutualism describes the situation where two species interact for the benefit of both in more than one type of interaction. For instance, if a given plant species is both pollinated and has its seeds dispersed by the same animal species.
Maj Hedegaard, Line +2 more
core +1 more source
La danza, los cinco sentidos y las artes. Un bailete español en la galería de pinturas de Leopoldo I
Criticón, 2020 This paper focuses on the libretto of a « bailete » that Emperor Leopold I of Austria had staged in 1667 in his gallery of paintings. The event was in honor of his first wife, the Spanish Infant Margarita, who had just arrived in Vienna. This allegorical
Florence d' Artois
doaj +1 more source
Telescopic double crowns in prosthodontics
International Journal of Dental Research, 2021 The purpose of this article is to classify the types of telescopic prostheses that protect natural teeth as an alternative to traditional removable prostheses, and to explain their advantages, disadvantages, indications and clinical significance in order to minimize the problems of removable dentures. Telescopic prostheses consist of an inner (primary)
openaire +2 more sources
Generation and Experimental Stress Analysis of Elliptical Gears with Combined Teeth
Journal of Engineering, 2019 In this study, generation of elliptical gears with different teeth profiles of crowned involute, double circular arc (DCA), and combined (crowned involute with DCA) has been developed.
Mansoor Ali Ismail +1 more
doaj +1 more source
Anadolu Dor Mimarisinde Kullanılan Anta, Pilaster ve Paye Başlıkları
Arkhaia Anatolika, 2020 In this study, which discusses the anta, plaster and pier capitals found in Doric buildings in Anatolia, the capitals have been grouped according to the form of the profiles, and each profile has been evaluated in itself. As a result of this grouping, it
Zeliha Gider Büyüközer
doaj +1 more source
Synthesis of Novel Bis-Crown and Double-Armed Crown Ethers Having the 18-Crown-6 Residue [PDF]
Bulletin of the Chemical Society of Japan, 1987 Abstract The 18-crown-6 derivative possessing two hydroxyl groups was prepared from the Diels–Alder adduct of 1,7-(1,2-ethanediylidene)-18-crown-6 with dimethyl 2-butynedioate. By using the crown ether as the key intermediate, novel bis-crown and double-armed crown ethers having the 18-crown-6 residue were synthesized, and their ...
Koichiro Naemura +2 more
openaire +1 more source